<!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<form>
  <div class="form-group">
    <label for="exampleInputEmail1">请输入标题</label>
    <input type="email" class="form-control" id="exampleInputEmail1" name="wbt">
  </div>
  <div class="form-group">
    <label for="exampleInputPassword1">请输入文章分类</label>
    <input type="password" class="form-control" id="exampleInputPassword1" name="wname">
  </div>
   <div class="form-group">
    <label for="exampleInputPassword1">请输入文章内容</label>
    <input type="password" class="form-control" id="exampleInputPassword1" name="wnr">
  </div>
  <button type="submit" class="btn btn-default">添加</button>
</form>